bMb/makefile at master · anthongretter/bMb · GitHub

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CC := /usr/local/cross/bin/i686-elf-gcc
AS := /usr/local/cross/bin/i686-elf-as

CFLAGS  := -std=gnu99 -ffreestanding -O2 -Wall -Wextra -Werror -I./include
LDFLAGS := -T src/linker.ld -ffreestanding -O2 -nostdlib
LDLIBS  := -lgcc

BUILD_PATH            := build
BUILD_ISO_GRUB_PATH   := $(BUILD_PATH)/iso/boot/grub

SRCS := $(wildcard src/*.c) $(wildcard src/*.s)
OBJS := $(patsubst %.c,%.o,$(patsubst %.s,%.o,$(SRCS)))
EXEC := $(BUILD_PATH)/bMb


all: $(EXEC)

$(EXEC): $(OBJS) | $(BUILD_PATH)/.dirstamp
	$(CC) $(LDFLAGS) $(LDLIBS) $^ -o $@

image: grub.cfg | $(BUILD_ISO_GRUB_PATH)/.dirstamp
	cp grub.cfg $(BUILD_ISO_GRUB_PATH)
	cp $(EXEC) $(BUILD_ISO_GRUB_PATH)/..
	grub-mkrescue -o $(EXEC).iso $(BUILD_ISO_GRUB_PATH)/../..

emulation: $(EXEC)
	qemu-system-i386 -kernel $(EXEC) -audiodev pa,id=speaker -machine pcspk-audiodev=speaker

%/.dirstamp:
	mkdir -p $(@D)
	@touch $@

clean:
	rm -r $(OBJS) $(BUILD_PATH)